Automatic electromagnet rover stop or breaker for spinning machines



Jan. 29 1924.

D. B. 'BRAcE: ET AL AUTOMATIC ELECTROMAGNE'I ROVER STOP 0!! BREAKER FORSPINNING MACHINES Filed April 21 1921 n .NE

Patented Jan, :29, 11924.

stares i T .Fi E.

nnnnnar B. BEACH) AND WILLIAM B. re erses, or rename, new roan,ASSIGNQRS To ECLIPSE TEXTILE DEVIGES, 1316-; Q? Em l-IRA HEIGHTS, NEW"193K, A 603-20112" TION OF NEW YQRK,

AUTOMAHJIC ELECTROMAGNET RdVER STD}? OB BREAKER- FOP;SPINNING-lrEACI'l'.INES.

AppIication filed. April 21, 1921. Serial No. 463,122.

To all whom it may concern Be it known that we, DE-LBERT B. BRACE andVVILLTAM B. Trrotma'citizens of the United States of America, residingat El 6 mira, in the county of Chemung and State of New York, haveinvented certain new and useful Improvements in Automatic ElectromagnetRover Stops or Breakers for Spinning Machines, of which the following isa specification.

The primary object of the present invention is to prevent any brokenthread of a spinning machine from being wrapped around the rovingrollers andnot only destroying the thread but causing injury to thecovering of the rollers.

A further object of the invention is the provision of an automaticbreaker for the thread at the roving 'uide before the thread enters therollers, the same being brought into action upon the accidental severingof .the thread after leaving the rollers on its way to the take upspool.

A. still further object oftheinvention is the provision of a device thatis simple in construction, easy and inexpensive to manufacture and whichcan readil vrbe installed upon any spinning machine for increasing itsefiiciency and automatically. preventing damage to the machinery.

With these general objects in view the invention consists of the novelcombination and arrangementoi parts hereinafter more fully described inconnection'with the accompanying drawing and in which like referencecharacters designate corresponding parts throughout the several views.

In the drawing, Figure 1' is an elevationalview showing a portion of aspinning machine and showing our device operatively installed thereonFigure 2 is an elevational view partly broken away otthe automaticelectric switch employed in our device,'and

Figure 3 is a similar view of the combined roving guide andelectro-magnetic thread breaker employed therewith.

Referring more in detail to the drawings the roving rollers 10 forming apart of the spinning machine are shown journaled in a support 11 ,uponthe base or table 12 of the machine while the threads 13 pass in theusual manner from roving spools 14 through the rollers 10 to a rectifing: or take-up spool .rearwardly of the rollers 10.

15 at the opposite side of said support. The thread 13 often becomesbroken between the rollers 10 and the thread guide 16 adjacent the spool15 which permits the thread to become entangled around the rollers 10and destroying a considerable amount of th thread and sometimes injuringthe engaging surface of the rollers 10 which are usuallyleather-covered. e i

To prevent such loss and injury it is desirable to have the thread 13automatically severed or broken at a point rearwardly of the rollers 10adjacent the point of entrance to the rollers whenever the threadaccidentally breaks at any point between said rollers 10 and the spool15. An automatic electric switch is mounted forwardly of the support 11by means of a bracket 17 secured to the table 12 and includes a cup 18rigidly ,secured to an inclined arm 19 of the bracket. Spaced contacts20 and 20 positioned with- :in and on the bottom of the cup 18 havebinding posts 21, 21 respectively outside of th cup. A switch-closingmember 22 in the form of a weight is movable Within the cup 18 having astem 23 freely slidableaxially through the removable screw-threadedcover 24: of the cup and having a hook 25 at its outer free endthroughwhich the thread 13 normallyjpasses with the stem 23 and weight22 suspended by said thread.

An electro-magnet 26 isqmounted by a clamp 27 upon an arm 28 fixed as at29 to a rigid portion or brace 30 of the support 11 .A plate 31 upon theupper end of th magnet 26 is pro vided with a roving guide 32 in theform of a hook and through which the thread 13 passes in its travel fromthe roving spools 14L to the rollers 10. The terminals 33 and 34 of theelectro-magnet 26 are electrically connected to the binding post 21 and21 of the switch by means of circuit wires 33 and 34Jrespectively, whilea manually-operable service switch 35 is connected to the magnetterminals 33 and 34 by circuit wires 36 and 37 respectively and wherebythe entire devicemay be rendered operative or inoperative at will.- I

A two-part core is provided for the electroemagnet 26 comprising anironportion 38 and a .brass portion 39, the latter having a toothediipper endscO adapted il g ag the thread 13 and: severing the thread bycutting the latter between the teeth 40 and the arcuate inner face 41 ofthe hook 32. The core 38-39 of the magnet 26 constitutes thethreadbreaking plunger and the downward movement thereof is limited bythe socket member or stop 42 upon the bottom of the magnet 26 and withinwhich socket member the core or plunger is normally seated when themagnet 26 is deenergized.

The complete operation of the device will be apparent from this detaileddescription thereof, and whereby the thread 13 is automatically severedsubstantially simultaneously with the breaking of the thread 13 adjacentthe automatic switch mechanism heretofore described. When the stem 23 isreleased upon breaking the thread 13 passing through the hook 25, theswitch member 22 drops of its own weight upon the contacts 20 and 20thereby closing the circuit between said contacts and the circuit wires33' and 34: resulting in the energizing of the electro-inagnet 26, itbeing understood that theservic'e switch 35 is closed for supplyingelectrical current from any desired source.

The energizingof the coil 26 causes the core ,38'39 to move upwardly andoutwardly bringing the toothed end 40 thereof forcibly against thethread 13 and cutting the thread against thecooperating f ace't l of theroving guide 32. The continued 0 eration of the rollers 10 after thecutting of the thread by the electrically-operated breaker fails, tofeed any further thread from the spools 14land the injury and cloggingofthe rollers 10 is prevented. The operating switch and electro-magneticthreadcutter are substantially enclosed as illustrated leaving noneofjthe contacts or mechanism open for the collection of dust and lintduring the operation of the spinning machine,

It will be understood that the thread or roving need not necessarily besevered by the teethto of the gripping means, but may be merely grippedthereby, whereupon the draft otthe rollswill cause a breakage orseverance ofthe thread or r'oving. The term cutting as used hereinshould therefore be interpreted accordingly.

While the form of the invention herein set forth is believed preferableit willbe understood that minor changes maybe made therein withoutdeparting from the spirit and scop of the invention.

7 Having thus described our invention What we claim as new and desire tosecure by Letters Patent, is: i

device of the class described comprising a weight-operated electricswitch controlled by the thread, suchswitch including'a casing having aclosedchamber, electrical contacts'located 1n such chamber and arrangedin an electrical circuit, a weight movable within such chamber, a stemsecured to the welght and extending through the casing and provided withan eye through which the thread passes, and an electrically operatedgripping means arranged in said circuit and adapted to grip the thread,said circuit being normally open but adapted to be closed by said weightupon the dropping of the latter when the thread breaks.

2. A device of the class described comprising, in combination withdrawing rolls and a spool, a weight-operated electric switch controlledby the thread as it passes from the rolls to the spool, such switchincluding a casing having a closed chamber and located between the rollsand the spool, electrical contacts located in such chamber and arrangedin an electrical circuit a weight movable within such chamber andnormally held suspended therein out of contact with said contacts bysaid thread, a stem secured to the weight and extending through thecasing and'provided with an eye through which such thread passes, and anelectrically operated gripping means arranged in said circuit andadapt'ed'to grip the thread, said means being located behind said 10115, and said circuit being normally open but adapted'to be closed bysaid weight upon the dropping of the latter upon the contacts when ththread breaks.

3. A thread breaker for spinning machines comprising. a roving guidethrough which the thread is adapted to travel, an electrically-operatedplunger adapted for cutting engagement with the thread in said guide,electrical actuating means for the plunger and circuit closing means forthe actuating means adapted for-automatic operation upon the accidentalbreaking of the thread, at a point removed from the roving guide atthe'opposite side of the roving rollers.

4. A device of th class described comprising an electric switchforwardly of the roving rollers of a spinning machine and including ashiftable switch member adapted for a normal open position suspendedfromthe thread passing through the machine, a solenoid-at 'theopposite sideof the rollers from the switch, a roving guide forthe thread mount-ed onthe solenoid. the latter having a shiftable core within the path ofmovement of which the roving guide'isposiitioned and electricalconnections between the solenoid and switch. a

i 5. In a spinning machine having roving rollers for the passing of thethreadtherethrough, an electric switch mounted forwardly of the rollersincluding a 'shiftable switclime nber normally maintainedin open circuitby suspension from'the thread and adapted for falling'to closed positionupon the accidental breaking of the threadfan 'e'lectroanagnetrigidly-mounted at the opposit sides of the rollers from said switch inelectrical circuit with the latter, a roving guide upon the magnetthrough which the thread is adapted to travel to said rollers and ashiftable core in the electr-o-Inagnet having a free end adapted forcutting engagement With the thread in the roving guide when theelectro1nagnet is energized upon the closing of the switch.

6. A device of the class described comprising an electric switchforwardly of the roving rollers of a spinning machine and including ashift-able switch member adapted for a normal open position suspendedfrom the thread passing through the machine, a

solenoid at the opposite side of the rollers from the switch, a rovingguide for the thread mounted on the solenoid, the latter having ashiftable core within the path of movement of which the roving guide ispositioned and electrical connections between the solenoid and switch,said solenoid having at the end opposite the roving guide a socketforming a stop and enclosing member for the core.

In testimony whereof We 'afiix our signatures.

DELBERT B. BRAOE. WILLIAM B. THOMAS.

